When a bullet strikes any surface, there is a critical angle at which the bullet will bounce off or ricochet from the surface rather than penetrate. Full metal-jacketed bullets also ricochet. It is represented here by the plane IRR". Similarly, internal ricochet may occur when a bullet strikes hard tissue. A bullet may also ricochet off the vertebral body to produce a wound path in the spinal canal that is not in line with the shooting direction. Plane of ricochet is a plane perpendicular to the target plane and containing the line along which the bullet travels immediately after ricochet. Figure 4.36 (A) Ricochet lead bullet with mirror-like surface on one side and imprint of screen on other side (B). for a first hand description of the ricochet displayed in this video. In Figure 4.36 the bullet ricocheted off a steel rail, passed through a screen door, and then struck the deceased. This study is the first large-series examining ricochet gunshot wounds involving different firearm calibers. Postmortem computed tomographic imaging is useful for localising a bullet and its fragments in the body and characterising the wound track. After ricocheting from the surface, the missile will lose a considerable amount of its velocity (anything up to 35% in test firings) and, invariably, lose its stability. The pattern of the screen is on one side of the bullet. The most common causes of an atypical entrance wound are bullet ricochet and interaction with an intermediate target. When the line along which the bullet travels after ricochet lies in the plane of incidence, the plane of incidence and ricochet …